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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/compiler/code-generator.h" | 5 #include "src/compiler/code-generator.h" |
6 | 6 |
7 #include "src/compiler/code-generator-impl.h" | 7 #include "src/compiler/code-generator-impl.h" |
8 #include "src/compiler/gap-resolver.h" | 8 #include "src/compiler/gap-resolver.h" |
9 #include "src/compiler/node-matchers.h" | 9 #include "src/compiler/node-matchers.h" |
10 #include "src/compiler/osr.h" | 10 #include "src/compiler/osr.h" |
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598 if (mode == kMode_MRI) { \ | 598 if (mode == kMode_MRI) { \ |
599 __ asm_instr(value, operand); \ | 599 __ asm_instr(value, operand); \ |
600 } else { \ | 600 } else { \ |
601 __ asm_instrx(value, operand); \ | 601 __ asm_instrx(value, operand); \ |
602 } \ | 602 } \ |
603 __ bind(&done); \ | 603 __ bind(&done); \ |
604 DCHECK_EQ(LeaveRC, i.OutputRCBit()); \ | 604 DCHECK_EQ(LeaveRC, i.OutputRCBit()); \ |
605 } while (0) | 605 } while (0) |
606 | 606 |
607 | 607 |
608 void CodeGenerator::AssembleDeconstructActivationRecord() { | 608 void CodeGenerator::AssembleDeconstructActivationRecord(int stack_param_delta) { |
609 CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); | 609 CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); |
610 int stack_slots = frame()->GetSpillSlotCount(); | 610 int stack_slots = frame()->GetSpillSlotCount(); |
| 611 int sp_delta = |
| 612 (stack_param_delta < 0) ? -stack_param_delta * kPointerSize : 0; |
611 if (descriptor->IsJSFunctionCall() || stack_slots > 0) { | 613 if (descriptor->IsJSFunctionCall() || stack_slots > 0) { |
612 __ LeaveFrame(StackFrame::MANUAL); | 614 __ LeaveFrame(StackFrame::MANUAL, sp_delta); |
| 615 } else if (sp_delta) { |
| 616 __ Add(sp, sp, sp_delta, r0); |
613 } | 617 } |
614 } | 618 } |
615 | 619 |
616 | 620 |
617 // Assembles an instruction after register allocation, producing machine code. | 621 // Assembles an instruction after register allocation, producing machine code. |
618 void CodeGenerator::AssembleArchInstruction(Instruction* instr) { | 622 void CodeGenerator::AssembleArchInstruction(Instruction* instr) { |
619 PPCOperandConverter i(this, instr); | 623 PPCOperandConverter i(this, instr); |
620 ArchOpcode opcode = ArchOpcodeField::decode(instr->opcode()); | 624 ArchOpcode opcode = ArchOpcodeField::decode(instr->opcode()); |
621 | 625 |
622 switch (opcode) { | 626 switch (opcode) { |
623 case kArchCallCodeObject: { | 627 case kArchCallCodeObject: { |
624 v8::internal::Assembler::BlockTrampolinePoolScope block_trampoline_pool( | 628 v8::internal::Assembler::BlockTrampolinePoolScope block_trampoline_pool( |
625 masm()); | 629 masm()); |
626 EnsureSpaceForLazyDeopt(); | 630 EnsureSpaceForLazyDeopt(); |
627 if (HasRegisterInput(instr, 0)) { | 631 if (HasRegisterInput(instr, 0)) { |
628 __ addi(ip, i.InputRegister(0), | 632 __ addi(ip, i.InputRegister(0), |
629 Operand(Code::kHeaderSize - kHeapObjectTag)); | 633 Operand(Code::kHeaderSize - kHeapObjectTag)); |
630 __ Call(ip); | 634 __ Call(ip); |
631 } else { | 635 } else { |
632 __ Call(Handle<Code>::cast(i.InputHeapObject(0)), | 636 __ Call(Handle<Code>::cast(i.InputHeapObject(0)), |
633 RelocInfo::CODE_TARGET); | 637 RelocInfo::CODE_TARGET); |
634 } | 638 } |
635 RecordCallPosition(instr); | 639 RecordCallPosition(instr); |
636 DCHECK_EQ(LeaveRC, i.OutputRCBit()); | 640 DCHECK_EQ(LeaveRC, i.OutputRCBit()); |
637 break; | 641 break; |
638 } | 642 } |
639 case kArchTailCallCodeObject: { | 643 case kArchTailCallCodeObject: { |
640 AssembleDeconstructActivationRecord(); | 644 int stack_param_delta = i.InputInt32(instr->InputCount() - 1); |
| 645 AssembleDeconstructActivationRecord(stack_param_delta); |
641 if (HasRegisterInput(instr, 0)) { | 646 if (HasRegisterInput(instr, 0)) { |
642 __ addi(ip, i.InputRegister(0), | 647 __ addi(ip, i.InputRegister(0), |
643 Operand(Code::kHeaderSize - kHeapObjectTag)); | 648 Operand(Code::kHeaderSize - kHeapObjectTag)); |
644 __ Jump(ip); | 649 __ Jump(ip); |
645 } else { | 650 } else { |
646 // We cannot use the constant pool to load the target since | 651 // We cannot use the constant pool to load the target since |
647 // we've already restored the caller's frame. | 652 // we've already restored the caller's frame. |
648 ConstantPoolUnavailableScope constant_pool_unavailable(masm()); | 653 ConstantPoolUnavailableScope constant_pool_unavailable(masm()); |
649 __ Jump(Handle<Code>::cast(i.InputHeapObject(0)), | 654 __ Jump(Handle<Code>::cast(i.InputHeapObject(0)), |
650 RelocInfo::CODE_TARGET); | 655 RelocInfo::CODE_TARGET); |
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672 } | 677 } |
673 case kArchTailCallJSFunction: { | 678 case kArchTailCallJSFunction: { |
674 Register func = i.InputRegister(0); | 679 Register func = i.InputRegister(0); |
675 if (FLAG_debug_code) { | 680 if (FLAG_debug_code) { |
676 // Check the function's context matches the context argument. | 681 // Check the function's context matches the context argument. |
677 __ LoadP(kScratchReg, | 682 __ LoadP(kScratchReg, |
678 FieldMemOperand(func, JSFunction::kContextOffset)); | 683 FieldMemOperand(func, JSFunction::kContextOffset)); |
679 __ cmp(cp, kScratchReg); | 684 __ cmp(cp, kScratchReg); |
680 __ Assert(eq, kWrongFunctionContext); | 685 __ Assert(eq, kWrongFunctionContext); |
681 } | 686 } |
682 AssembleDeconstructActivationRecord(); | 687 int stack_param_delta = i.InputInt32(instr->InputCount() - 1); |
| 688 AssembleDeconstructActivationRecord(stack_param_delta); |
683 __ LoadP(ip, FieldMemOperand(func, JSFunction::kCodeEntryOffset)); | 689 __ LoadP(ip, FieldMemOperand(func, JSFunction::kCodeEntryOffset)); |
684 __ Jump(ip); | 690 __ Jump(ip); |
685 DCHECK_EQ(LeaveRC, i.OutputRCBit()); | 691 DCHECK_EQ(LeaveRC, i.OutputRCBit()); |
686 break; | 692 break; |
687 } | 693 } |
688 case kArchLazyBailout: { | 694 case kArchLazyBailout: { |
689 v8::internal::Assembler::BlockTrampolinePoolScope block_trampoline_pool( | 695 v8::internal::Assembler::BlockTrampolinePoolScope block_trampoline_pool( |
690 masm()); | 696 masm()); |
691 EnsureSpaceForLazyDeopt(); | 697 EnsureSpaceForLazyDeopt(); |
692 RecordCallPosition(instr); | 698 RecordCallPosition(instr); |
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1723 padding_size -= v8::internal::Assembler::kInstrSize; | 1729 padding_size -= v8::internal::Assembler::kInstrSize; |
1724 } | 1730 } |
1725 } | 1731 } |
1726 } | 1732 } |
1727 | 1733 |
1728 #undef __ | 1734 #undef __ |
1729 | 1735 |
1730 } // namespace compiler | 1736 } // namespace compiler |
1731 } // namespace internal | 1737 } // namespace internal |
1732 } // namespace v8 | 1738 } // namespace v8 |
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